The Difference Between Covered and Uncovered Interest Parity Is That

The difference between covered and uncovered interest parity is that

A) the former equates real interest rates across nations; the latter equates nominal interest rates
B) the former compares bonds or bank accounts of equal maturity; the latter compares instruments of different maturity
C) arbitrage is possible in the former but not in the latter
D) the former uses forward contracts to eliminate interest rate risk; the latter does not
E) the former holds in the short run; the latter holds in the long run